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 A189498 T(n,k)=Number of arrangements of n+1 nonzero numbers x(i) in -k..k with the sum of floor(x(i)/x(i+1)) equal to zero 16
 0, 2, 4, 6, 12, 0, 12, 38, 42, 12, 20, 78, 152, 136, 0, 30, 148, 462, 928, 550, 40, 42, 240, 1088, 3388, 4920, 1892, 0, 56, 380, 2128, 9394, 24806, 27508, 7384, 140, 72, 554, 3850, 22088, 85480, 182634, 152358, 26816, 0, 90, 788, 6474, 45892, 238836, 787412 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...0......2........6........12.........20..........30...........42...........56 ...4.....12.......38........78........148.........240..........380..........554 ...0.....42......152.......462.......1088........2128.........3850.........6474 ..12....136......928......3388.......9394.......22088........45892........86416 ...0....550.....4920.....24806......85480......238836.......567774......1218778 ..40...1892....27508....182634.....787412.....2642358......7269852.....17692662 ...0...7384...152358...1350418....7250142....29261538.....93830584....260746932 .140..26816...852940..10077438...67449574...326423068...1218634086...3870426602 ...0.103288..4796962..75593372..630466648..3664621084..15936391068..57837221756 .504.386928.27117826.569975518.5926141678.41363200538.209537582772.869215927390 LINKS R. H. Hardin, Table of n, a(n) for n = 1..797 EXAMPLE Some solutions for n=7 k=5 .-5...-5...-5...-5...-5...-4...-5...-5...-5...-4...-5...-5...-5...-5...-5...-5 .-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5 ..3...-4....5....2....3...-4....4...-4...-3...-5....5....5....1....1....3....3 .-4....3...-4...-3....2...-3....3....5....1...-3...-4....2....4....2....1....2 .-2....2...-1...-4...-1...-5....1....4....1...-4...-2...-5....2....2...-1....5 ..4....5...-3....4...-5...-2...-2....3....2...-5....2....3...-5...-4...-5...-5 ..3...-2....2....2...-4....5...-4...-1....2....3....3....5...-5...-1....3...-2 ..5...-1....5....1...-4...-2....3...-4...-4....4....3....5...-2...-4....3....2 CROSSREFS Column 1 is A028329(n/2) for even n Row 1 is A002378(n-1) Sequence in context: A049914 A056763 A190071 * A129567 A064469 A057700 Adjacent sequences: A189495 A189496 A189497 * A189499 A189500 A189501 KEYWORD nonn,tabl AUTHOR R. H. Hardin Apr 23 2011 STATUS approved

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Last modified October 3 16:48 EDT 2023. Contains 365868 sequences. (Running on oeis4.)